Extract bitrate allocation of spatial/temporal layers out of codec impl.

webrtc/modules/video_coding/BUILD.gn

 # Copyright (c) 2014 The WebRTC project authors. All Rights Reserved.
 #
 # Use of this source code is governed by a BSD-style license
 # that can be found in the LICENSE file in the root of the source
 # tree. An additional intellectual property rights grant can be found
 # in the file PATENTS.  All contributing project authors may
 # be found in the AUTHORS file in the root of the source tree.
 
 import("../../build/webrtc.gni")
 
@@ skipping 13 matching lines @@
     "frame_buffer2.cc",
     "frame_buffer2.h",
     "frame_object.cc",
     "frame_object.h",
     "generic_decoder.cc",
     "generic_decoder.h",
     "generic_encoder.cc",
     "generic_encoder.h",
     "histogram.cc",
     "histogram.h",
+    "include/video_codec_initializer.h",
     "include/video_coding.h",
     "include/video_coding_defines.h",
     "inter_frame_delay.cc",
     "inter_frame_delay.h",
     "internal_defines.h",
     "jitter_buffer.cc",
     "jitter_buffer.h",
     "jitter_buffer_common.h",
     "jitter_estimator.cc",
     "jitter_estimator.h",
@@ skipping 17 matching lines @@
     "rtp_frame_reference_finder.cc",
     "rtp_frame_reference_finder.h",
     "rtt_filter.cc",
     "rtt_filter.h",
     "session_info.cc",
     "session_info.h",
     "timestamp_map.cc",
     "timestamp_map.h",
     "timing.cc",
     "timing.h",
+    "video_codec_initializer.cc",
     "video_coding_impl.cc",
     "video_coding_impl.h",
     "video_receiver.cc",
     "video_sender.cc",
   ]
 
   # TODO(jschuh): Bug 1348: fix this warning.
   configs += [ "//build/config/compiler:no_size_t_to_int_warning" ]
 
   if (!build_with_chromium && is_clang) {
     # Suppress warnings from the Chromium Clang plugin (bugs.webrtc.org/163).
     suppressed_configs += [ "//build/config/clang:find_bad_constructs" ]
   }
 
   deps = [
     ":video_coding_utility",
     ":webrtc_h264",
     ":webrtc_i420",
     ":webrtc_vp8",
     ":webrtc_vp9",
     "../..:webrtc_common",
     "../../common_video",
     "../../system_wrappers",
   ]
 }
 
 rtc_static_library("video_coding_utility") {
   sources = [
+    "utility/default_video_bitrate_allocator.cc",
+    "utility/default_video_bitrate_allocator.h",
     "utility/frame_dropper.cc",
     "utility/frame_dropper.h",
     "utility/ivf_file_writer.cc",
     "utility/ivf_file_writer.h",
     "utility/moving_average.cc",
     "utility/moving_average.h",
     "utility/qp_parser.cc",
     "utility/qp_parser.h",
     "utility/quality_scaler.cc",
     "utility/quality_scaler.h",
@@ skipping 211 matching lines @@
     if (!build_with_chromium && is_clang) {
       # Suppress warnings from the Chromium Clang plugin (bugs.webrtc.org/163).
       suppressed_configs += [ "//build/config/clang:find_bad_constructs" ]
     }
 
     deps = [
       "../../test:test_support",
     ]
   }
 }